2 Ancient Den

3 Welding Jar

4 Ornithopter

2 x Ancient Den

3 x Welding Jar

4 x Ornithopter

Blightsteel Colossus

DescriptionTrample, infectBlightsteel Colossus is indestructible.If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.